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Short description
I/O module 2 full bridges for controlling stepper motors
General information
B&R ID code 0x1DCB
Status indicators I/O function for each channel, supply voltage, bus function
I/O power supply Yes, using status LED and software
Motor status Yes, using status LED and software
Connection type
X2X Link M12, B-keyed
Inputs/Outputs 4x M12, A-keyed
I/O power supply M8, 4-pin
Power consumption
X2X Link power supply 0.75 W
Internal I/O
At 24 VDC Max. 1.7 W
At 48 VDC Max. 2 W
CE Yes
ATEX Zone 2, II 3G Ex nA IIA T5 Gc
IP67, Ta = 0 - Max. 60°C
TÜV 05 ATEX 7201X
UL cULus E115267
Industrial control equipment
HazLoc cCSAus 244665
Process control equipment
for hazardous locations
Class I, Division 2, Groups ABCD, T5
KC Yes
Motor bridge - Power unit
Quantity 2
Type 2-phase bipolar stepper motor (full bridge)
Nominal voltage 24 to 38.5 VDC ±25%
Nominal current 3 A
Max. current/motor 5 A for 2 s (after a recovery time of at least 10 s at maximal 3 A)
Max. current/module 8 A
Controller frequency 38.5 kHz
DC bus capacitance 200 µF
Step resolution 256 microsteps per full step
I/O power supply
Nominal voltage 24 to 38.5 VDC ±25%
Power consumption
Sensor power supply Max. 0.96 W
Integrated protection
Reverse polarity protection No
Digital inputs
Quantity 6
Nominal voltage 24 VDC
Input characteristics per EN 61131-2 Type 1
Input voltage 24 VDC -15% / +20%
Input current at 24 VDC Approx. 4 mA
Input circuit Sink
Input filter
Hardware <5 µs
Software -
Input resistance Typ. 5.4 kΩ
Additional functions 2x ABR incremental encoder
Switching threshold
Low <5 VDC
High >15 VDC
Insulation voltage between channel and bus 500 VEff
ABR incremental encoder
Quantity 2
Encoder inputs 24 V, asymmetrical
Counter size 16-bit
Input frequency Max. 50 kHz
Evaluation 4x
Encoder power supply Module-internal, max. 20 mA per encoder
Signal form Square wave pulse
Counter 1 Inputs 1 to 3
Counter 2 Inputs 4 to 6
Counter frequency Max. 200 kHz
Sensor power supply
Supply voltage 24 VDC
Short-circuit proof Yes
Supply voltage
Min. voltage at 20 mA / group 20 VDC
Electrical properties
Electrical isolation Channel isolated from bus
Channel not isolated from channel
Operating conditions
Mounting orientation
Any Yes
Installation elevation above sea level
0 to 2000 m No limitations
>2000 m Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529 IP67
Ambient conditions
Operation 0 to 50°C
Derating -
Storage -25 to 85°C
Transport -25 to 85°C
Mechanical properties
Width 53 mm
Height 85 mm
Depth 42 mm
Weight 195 g
Torque for connections
M8 Max. 0.4 Nm
M12 Max. 0.6 Nm
Material number:
  • 2 stepper motors, 24 to 38.5 VDC ±25%, 3 A (5 A peak)
  • Current value resolution of 1%
  • Boost, nominal and holding current separately configurable
  • 38.5 kHz PWM frequency
  • Integrated motor detection
  • 256 microsteps
  • Stall detection
  • Complete integration in Automation Studio and CNC applications
  • 2x 3 inputs, 24 VDC, configurable for ABR incremental encoders
  • Integrated short-circuit proof encoder power supply
  • Function model 3 ("Ramp") based on CANopen communication profile DS402
  • NetTime timestamp: Position change, trigger time

The stepper motor module is used to control up to 2 stepper motors with a nominal voltage of 24 to 38.5 VDC ±25% at a motor current up to 3 A (5 A peak).

In addition, this module has 6 digital inputs that can be used as limit switches or encoder inputs.

Due to the individual adjustment of the coil currents, the motor is only operated with the current it actually needs. This simplifies the selection of the available motors and prevents unnecessary heating. Because this affects energy consumption and thermal load, the effects are positive on the service life of the complete system. Complete flexibility is achieved through the use of independently adjustable holding, boost and nominal current values. The current for microsteps is automatically adjusted to the configured current values.

The automatic motor identification system is an enormous help during standstills. The stepper motor modules can identify the connected motors using their coil characteristics and generate feedback in the form of an analog value. This makes it possible to detect not only wiring errors, but also incorrect motor types being used mistakenly. A stall detection mechanism is integrated to analyze the motor load. Detection of the stall is defined via a configurable threshold. This allows an overload or motor standstill to be detected precisely in many different types of applications.

Automation Studio HW Upgrades Version (Date) Download
V2.7 HW Upgrade (X67SM2436) EXE / 3 MB
V3.0 HW Upgrade (X67SM2436) EXE / 4 MB
V4.0 HW Upgrade (X67SM2436) EXE / 3 MB
Certificates Version (Date) Download
244665 CSA HazLoc Certificate of Compliance X20, X67 PDF / 56 KB
E115267 UL CoC X67 PDF / 84 KB
Safe cutoff of potential groups PDF / 147 KB
TÜV 05 ATEX 7201 X PDF / 129 KB
Documentation Version (Date) Download
Data sheet X67SM2436 PDF / 1 MB
X67 System User´s Manual PDF / 19 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
X67 EPLAN P8 EXE / 85 MB
X67 EPLAN P8 from V2.4 EXE / 105 MB
M-CAD (Mechan. Templates) Version (Date) Download
3D File DXF/STEP X67 ZIP / 1 MB

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